Nonintrusive multielement heat-transfer sensor overcomes limitations of previous methods. New technique determines simultaneously extent of laminar boundary layer and locations of laminar separation, transition in separated layer, and turbulent reattachment. In tests, only small amounts of heat introduced, and heated thin films caused little disturbance to shear layer or to each other. Promising tool for measurements of stability of laminar boundary layers, separated shear layers, and transitional separation bubbles. Simple and capable of providing comprehensive picture of state of shear flow along entire surface. Significant savings in tunnel (or flight) test time with corresponding savings in cost.
Measuring Laminar-Separation Bubbles On Airfoils
NASA Tech Briefs ; 13 , 7
1989-07-01
Miscellaneous
No indication
English
A Numerical Method to Detect Laminar Separation Bubbles over Airfoils
British Library Conference Proceedings | 2013
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